Antiskid foot operated bellows



Sept. 2, 1952 D. T. MOWBRAY 2,609,000

ANTISKID FOOT OPERATED BELLOWS Filed Dec. 21, 1949 [J mi /9 2, I S

' diiorzzg patented Sept. 2

STATES PATENT OFFICE 7 j V l 7 2,609,000 ANTIS-KID FOOT OPERATED BELLOWSDouglas T.-. Mowbray, Waterloo, Iowa Application Decemb r 21, 1949,Serial No. 134,169

The primary object of" my invention is toprovide an antiskid'footoperated bellows that is prevented frommoving over thesurface of thedoor, during operation.

A further object of my invention is to provide such an anti-skid bellowsthat may be easily lifted above and moved away from the anchoringdevice'to allow the floor under the bellows to be cleaned.

Another object of my invention is to provide 4 Claims ((31:137-777) abellows the bottom of which is formed by a separate weighting means.

1 A further object of my invention is to'provide a bellows fitting overan anchoring means which is secured to a floor; saldbellows having aresilientlipsealat its base to prevent noises resulting from thecontactbetween the weighting means and the floor anchor;

A still further object of my inventionis to Dl'QY djQ a foot operatedbellows that is durable 111 1158, economical in manufacture and refinedin appearance. I U 1 These and other objects will be apparent to thoseskilled in the art.

My invention consists in the construction, arrangement, andcombinationof the various parts of the device, whereby the objectscontemplated are attained as hereinafter more fully set forth, pointedout in my claims, and illustrated in the accompanying drawings, inwhich:

Fig. l is a perspective view of my device, with dotted lines showing itsanchor means.

Fig. 2 is a cross-section of my device taken on the line 2-2 of Fig. 1.

Fig. 3 is an exploded perspective view of the anchoring means.

Foot operated bellows designed to rest on a floor or like are old. Thechief difficulty, however, of such air induced pumps is that they slideout of proper position on the floor or like surface either by accidentor due to side pressures experienced by the item during its operation.If the bellows is secured to the floor surface, it can not well bequickly removed for floor cleaning or like.

Furthermore, many floors of tile, cement, or

like do not lend themselves to bolt, or screw fastening means. I haveovercome such objections by providing a bellows of novel design and onecapable of being readily detached from its anchor means.

Referring to the drawings, Ill designates the main body portion of thebellows which is made of some resilient material such as rubber or thelike and has its top and sides formed in a single piece. This method ofmanufacture is possible, because the bottom is a separate bottom-weightII that is inserted later. The base of the bel lows is approximatelyrectangular in shape, and the top slants upwardly and forwardly. Thesides I2 are formed like accordion pleats to predetermine the directionof movements; of the sides as the bellows is collapsed. Therearecorrugations [3 on the slanting top surface to prevent a foot or thelike from slipping from the devicewhen pressure is applied. In the rearend of the bellows is a neck portion 14 which embraces a fitting id forconnecting a flexible conduit IE to the bellows for conducting the airpressure generated by collapsing the bellows to the point of use.

In Fig. 2 the numeral I'l designates a floor surface or the like. Theweight-bottom member fill is detachably embraced at its'edges by. thebellows it by stop flange it above by the sealing flange 59, below.Flange i9 is interposed between the weight-bottom il and the floor ll asshown inFig.2. I '51- Fig.3 shows theanchor 26 comprising a base portion2| which may be secured to a floor surface or like by an adhesive and atop portion 22 that is secured to the base portion 2!. Base portion 2|has perforations 23 in it which permit the adhesive to flow through andover part of the top of it which produces a series of rivet-likeprojections 24 through said plate, as shown in Fig. 2. Nuts 25 aresecured to one end of base portion 2| by any suitable means. Top portion22 as shown in Fig. 3 takes the form of a hollow truncated pyramid ofrectangular base with a raised portion 26 at one end to accommodate nuts25. There are two holes 21 in the raised portion 26 to permit screws 28to extend downwardly through top portion 22 and thread into nuts 25,thus securing the two parts of anchor 20 together. Base portion 2| ofanchor 20 may be eliminated if the bellows is to be used on a wood flooror like. On such a floor, top portion 22 of anchor 26 is secured to thefloor surface by means of wood screws or the like. Weightbottom member Hhas an inverted well 29 in its underside designed to embrace anchor 20when bellows I0 is resting on floor surface H, as shown in Fig. 2. Thesides and ends of well 29 are slanted to contact anchor top portion 22only when the bellows is resting on the floor surface I! or like, asshown in Fig. 2. Thus the bellows is self-centering as it is placed overanchor 20. Inversely the initial lifting force applied to bellows Iiifrees well 29 from anchor 20 so that the bellows IE3 may be readilymoved to permit the floor surface to be cleaned.

The force required to collapse the bellows tends.

to force the bellows 10 over the surface of the floor 11. With thebellows mounted over the anchor 20, however, no movement over. the.surface of the floor I! can take place.

Some changes may be made in the construction and arrangement of myanti-skid foot op-,

erated bellows without departing from the real pir t amputee afmyinvtioa and t my intention to cover by. my claims, any modified forms ofstructureor use of mechanical equivaent which. m y be r a onab u e i nthei i D?- Lclaim:

1 In a deviceof. the class described, a resilient bellows having abottom and two spaced. apart inwardly. extending, cont u us. a s. ormnear the. bottom of said bellows, and a weight means detachably restingbetween said flanges.

2. In. a. deviceof the classdescribed, a resilient bellows. openatitsbottom and having twospaced apart inwardly extending continuous flangesformed on the inside bottom of said bellows, and aweightplate memberhaving its peripheral edge portion. detachably. resting. in. the. space.between said. two. flanges and closing theopen bottom of said. bellows.to. render said bellows. bottom. substantially air tight.

3. In a device of the class described, a, resilient bellows open at itsbottom and. having twospaced apart. inwardly. extendingcontinuousflanges formed on the inside near the bottom of said bellows,a weight plate member having its peripheral edge portion resting in thespace between the two flanges of said bellows and closing the openbottom of said bellows; said weight plate having a depression in thebottom thereof. and an anchor member detachably extending into saiddepression and designed to be perma nently secured to a horizontalsurface.

4. Ina device of the class described, a resilient bellows open at itsbottom and having two spaced apart inwardly extending continuous flangesformed on the inside and near the bottom of said bellows, a weight platemember having its peripheral edge portion resting in the space betweenthe two flanges of said bellows and closing the open bottom of saidbellows; said weight plate having a depression therein with upwardly andinwardly sloping sides, an anchor member having upwardly and inwardlysloping sidesdetachably extending into said depression and, de signedtobe fixed to a horizontal surface,

DOUGLAS: T; MOWBR-AY;

REFERENCES: GITED Th o l w eie ns s. r of f? 9ll im. bf flle of thispatent:

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